Set the USB to RS 232 serial port line used by the console port of router switch (passed the test by MS HyperTerminal, SecureCRT and other configuration software) It can solve the problem of notebook and desktop without 9-pin RS 232 serial port. It is mainly used to configure and use the console port of router, switch and other industrial control equipment. (this ordinary machine can be used, but large machines can't be used) It can also be used in barcode reading equipment, telephone, mobile phone, digital camera, modem, ISDN and other terminal adapter communication. It is characterized by good compatibility (other low-grade products on the market have incompatibility problems among various devices, so it is difficult or even impossible to use them after buying them back. It takes time and energy and costs more money. You will know once you have experienced it), Supports Windows 98, windows me, Windows 2000, Windows XP, MacOS 8.6 or higher. CD with drive It supports usb1.0 / 1.1 specification and is compatible with USB2.0 size: 0.6m Material:plastic colour:Blue Package Contents: 1 x Data Cable Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!